import axios from 'axios'
import {
  ElNotification,
  ElMessageBox,
  ElMessage,
  ElLoading,
} from 'element-plus'
import { getToken } from '@/utils/auth'
import errorCode from '@/utils/errorCode'
import { tansParams, blobValidate } from '@/utils/ruoyi'
import cache from '@/plugins/cache'
import { saveAs } from 'file-saver'
import useUserStore from '@/store/modules/user'
import { RequestParams } from 'axios-mapper'

import { IRspObj, TErrorCode, TOtherCode } from './type'

let downloadLoadingInstance: { close: () => void }
/**
 * 是否显示重新登录
 */
export let isRelogin = { show: false }
// @ts-ignore
axios.defaults.headers['Content-Type'] = 'application/json;charset=utf-8'

/**
 * 创建axios实例
 */
// @ts-ignore
const service = axios.create({
  // axios中请求配置有baseURL选项，表示请求URL公共部分
  baseURL: import.meta.env.VITE_APP_BASE_API,
  // 超时
  timeout: 10000,
})

/**
 * request请求拦截器
 */
service.interceptors.request.use(
  // @ts-ignore
  (config) => {
    // 是否需要设置 token
    const isToken = (config.headers || {}).isToken === false
    // 是否需要防止数据重复提交
    const isRepeatSubmit = (config.headers || {}).repeatSubmit === false
    if (getToken() && !isToken) {
      if (config.headers) {
        config.headers['Authorization'] = 'Bearer ' + getToken() // 让每个请求携带自定义token 请根据实际情况自行修改
      }
    }
    // get请求映射params参数
    if (config.method === 'get' && config.params) {
      let url = config.url + '?' + tansParams(config.params)
      url = url.slice(0, -1)
      config.params = {}
      config.url = url
    }
    if (
      !isRepeatSubmit &&
      (config.method === 'post' || config.method === 'put')
    ) {
      const requestObj = {
        url: config.url,
        data:
          typeof config.data === 'object'
            ? JSON.stringify(config.data)
            : config.data,
        time: new Date().getTime(),
      }
      const sessionObj = cache.session.getJSON('sessionObj')
      if (
        sessionObj === undefined ||
        sessionObj === null ||
        sessionObj === ''
      ) {
        cache.session.setJSON('sessionObj', requestObj)
      } else {
        const s_url = sessionObj.url // 请求地址
        const s_data = sessionObj.data // 请求数据
        const s_time = sessionObj.time // 请求时间
        const interval = 1000 // 间隔时间(ms)，小于此时间视为重复提交
        if (
          s_data === requestObj.data &&
          requestObj.time - s_time < interval &&
          s_url === requestObj.url
        ) {
          const message = '数据正在处理，请勿重复提交'
          console.warn(`[${s_url}]: ` + message)
          return Promise.reject(new Error(message))
        } else {
          cache.session.setJSON('sessionObj', requestObj)
        }
      }
    }
    return config
  },
  (error: any) => {
    console.log(error)
    Promise.reject(error)
  },
)

/**
 * 响应拦截器
 */
service.interceptors.response.use(
  (res: any) => {
    // 未设置状态码则默认成功状态
    const code: TErrorCode = res.data.code || 200
    const otherCode: TOtherCode = res.data.code
    // 获取错误信息
    const msg =
      code === 401 || code === 403 || code === 404
        ? errorCode[code as 401 | 403 | 404]
        : res.data.msg || errorCode['default']
    // 二进制数据则直接返回
    if (
      res.request.responseType === 'blob' ||
      res.request.responseType === 'arraybuffer'
    ) {
      return res.data
    }
    if (code === 401) {
      if (!isRelogin.show) {
        isRelogin.show = true
        ElMessageBox.confirm(
          '登录状态已过期，您可以继续留在该页面，或者重新登录',
          '系统提示',
          {
            confirmButtonText: '重新登录',
            cancelButtonText: '取消',
            type: 'warning',
          },
        )
          .then(() => {
            isRelogin.show = false
            useUserStore()
              .logout()
              .then(() => {
                location.href = '/index'
              })
          })
          .catch(() => {
            isRelogin.show = false
          })
      }
      return Promise.reject('无效的会话，或者会话已过期，请重新登录。')
    } else if (otherCode === 500) {
      ElMessage({ message: msg, type: 'error' })
      return Promise.reject(new Error(msg))
    } else if (otherCode === 601) {
      ElMessage({ message: msg, type: 'warning' })
      return Promise.reject(new Error(msg))
    } else if (otherCode !== 200) {
      ElNotification.error({ title: msg })
      return Promise.reject('error')
    } else {
      return Promise.resolve(res.data)
    }
  },
  (error: any) => {
    console.log('err' + error)
    let { message } = error
    if (message == 'Network Error') {
      message = '后端接口连接异常'
    } else if (message.includes('timeout')) {
      message = '系统接口请求超时'
    } else if (message.includes('Request failed with status code')) {
      message = '系统接口' + message.substr(message.length - 3) + '异常'
    }
    ElMessage({ message: message, type: 'error', duration: 5 * 1000 })
    return Promise.reject(error)
  },
)

/**
 * 通用下载方法
 * @param url
 * @param params
 * @param filename
 * @param config
 * @returns
 */
export function download(
  url: string,
  params: RequestParams,
  filename: string,
  config: any,
) {
  downloadLoadingInstance = ElLoading.service({
    text: '正在下载数据，请稍候',
    background: 'rgba(0, 0, 0, 0.7)',
  })
  return service
    .post(url, params, {
      transformRequest: [
        (params: RequestParams) => {
          return tansParams(params)
        },
      ],
      headers: { 'Content-Type': 'application/x-www-form-urlencoded' },
      responseType: 'blob',
      ...config,
    })
    .then(async (data: any) => {
      const isLogin = await blobValidate(data)
      if (isLogin) {
        const blob = new Blob([data])
        saveAs(blob, filename)
      } else {
        const resText = await data.text()
        const rspObj: IRspObj = JSON.parse(resText)

        function isErrorCode(code: number): code is 401 | 403 | 404 {
          return [401, 403, 404].includes(code)
        }
        const errMsg = isErrorCode(Number(rspObj.code))
          ? errorCode[rspObj.code as 401 | 403 | 404]
          : errorCode['default'] || rspObj.msg

        ElMessage.error(errMsg)
      }
      downloadLoadingInstance.close()
    })
    .catch((r: any) => {
      console.error(r)
      ElMessage.error('下载文件出现错误，请联系管理员！')
      downloadLoadingInstance.close()
    })
}

export default service
